Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 2 Jan 1989 | St. Albans | 2 | 1 | Slight |
| Thu 5 Jan 1989 | St. Albans | 2 | 1 | Slight |
| Sat 7 Jan 1989 | Hertsmere | 1 | 1 | Slight |
| Mon 9 Jan 1989 | St. Albans | 2 | 1 | Slight |
| Thu 12 Jan 1989 | Hertsmere | 1 | 1 | Slight |
| Fri 20 Jan 1989 | Dacorum | 2 | 2 | Slight |
| Sat 21 Jan 1989 | St. Albans | 1 | 1 | Slight |
| Sat 21 Jan 1989 | St. Albans | 4 | 1 | Slight |
| Thu 26 Jan 1989 | Hertsmere | 1 | 1 | Slight |
| Fri 27 Jan 1989 | St. Albans | 2 | 1 | Slight |
| Sun 29 Jan 1989 | St. Albans | 2 | 3 | Slight |
| Tue 31 Jan 1989 | St. Albans | 2 | 1 | Slight |
| Fri 3 Feb 1989 | Hertsmere | 2 | 1 | Slight |
| Fri 3 Feb 1989 | Hertsmere | 2 | 1 | Slight |
| Sun 5 Feb 1989 | St. Albans | 2 | 1 | Slight |
| Sat 11 Feb 1989 | St. Albans | 2 | 1 | Serious |
| Wed 15 Feb 1989 | St. Albans | 2 | 1 | Slight |
| Thu 23 Feb 1989 | Barnet | 2 | 1 | Serious |
| Fri 24 Feb 1989 | Hertsmere | 3 | 1 | Slight |
| Fri 24 Feb 1989 | St. Albans | 2 | 1 | Slight |
| Sat 25 Feb 1989 | St. Albans | 2 | 1 | Slight |
| Wed 8 Mar 1989 | St. Albans | 2 | 1 | Slight |
| Fri 10 Mar 1989 | St. Albans | 2 | 1 | Slight |
| Sat 11 Mar 1989 | Hertsmere | 3 | 1 | Slight |
| Sun 12 Mar 1989 | St. Albans | 2 | 1 | Serious |
| Wed 15 Mar 1989 | St. Albans | 1 | 1 | Slight |
| Wed 29 Mar 1989 | St. Albans | 2 | 1 | Slight |
| Fri 31 Mar 1989 | St. Albans | 3 | 1 | Slight |
| Tue 4 Apr 1989 | St. Albans | 2 | 1 | Slight |
| Tue 11 Apr 1989 | St. Albans | 2 | 1 | Slight |
| Thu 13 Apr 1989 | St. Albans | 2 | 2 | Slight |
| Sat 15 Apr 1989 | St. Albans | 1 | 1 | Slight |
| Sun 16 Apr 1989 | St. Albans | 2 | 1 | Slight |
| Tue 18 Apr 1989 | St. Albans | 1 | 1 | Slight |
| Sat 22 Apr 1989 | St. Albans | 2 | 1 | Serious |
| Thu 27 Apr 1989 | St. Albans | 3 | 2 | Serious |
| Sat 29 Apr 1989 | Hertsmere | 2 | 1 | Slight |
| Sat 6 May 1989 | St. Albans | 4 | 2 | Slight |
| Wed 17 May 1989 | Hertsmere | 1 | 1 | Slight |
| Thu 18 May 1989 | Hertsmere | 4 | 1 | Serious |
| Fri 26 May 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 31 May 1989 | St. Albans | 3 | 2 | Slight |
| Sun 4 Jun 1989 | St. Albans | 1 | 1 | Slight |
| Tue 6 Jun 1989 | St. Albans | 3 | 2 | Slight |
| Tue 6 Jun 1989 | St. Albans | 1 | 1 | Serious |
| Fri 9 Jun 1989 | St. Albans | 1 | 1 | Slight |
| Mon 12 Jun 1989 | Hertsmere | 1 | 2 | Serious |
| Wed 14 Jun 1989 | Hertsmere | 2 | 1 | Serious |
| Thu 29 Jun 1989 | Hertsmere | 2 | 1 | Slight |
| Mon 3 Jul 1989 | St. Albans | 2 | 1 | Slight |
| Mon 3 Jul 1989 | St. Albans | 2 | 2 | Serious |
| Sat 8 Jul 1989 | St. Albans | 3 | 2 | Serious |
| Sun 9 Jul 1989 | St. Albans | 3 | 1 | Slight |
| Wed 12 Jul 1989 | Hertsmere | 1 | 1 | Slight |
| Thu 20 Jul 1989 | St. Albans | 2 | 1 | Slight |
| Thu 20 Jul 1989 | St. Albans | 1 | 1 | Serious |
| Wed 26 Jul 1989 | St. Albans | 2 | 1 | Slight |
| Sat 29 Jul 1989 | St. Albans | 2 | 1 | Slight |
| Sun 30 Jul 1989 | St. Albans | 1 | 1 | Slight |
| Sat 5 Aug 1989 | Hertsmere | 1 | 1 | Slight |
| Mon 7 Aug 1989 | St. Albans | 2 | 1 | Slight |
| Mon 21 Aug 1989 | St. Albans | 2 | 1 | Slight |
| Fri 25 Aug 1989 | Hertsmere | 2 | 1 | Slight |
| Sat 2 Sep 1989 | St. Albans | 2 | 1 | Slight |
| Wed 6 Sep 1989 | St. Albans | 2 | 1 | Slight |
| Tue 12 Sep 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 13 Sep 1989 | Hertsmere | 2 | 1 | Slight |
| Fri 15 Sep 1989 | St. Albans | 2 | 1 | Slight |
| Fri 15 Sep 1989 | St. Albans | 1 | 1 | Slight |
| Sat 16 Sep 1989 | St. Albans | 1 | 1 | Serious |
| Sun 17 Sep 1989 | Hertsmere | 1 | 1 | Slight |
| Sun 17 Sep 1989 | Dacorum | 2 | 1 | Slight |
| Sun 17 Sep 1989 | Hertsmere | 2 | 2 | Slight |
| Wed 20 Sep 1989 | St. Albans | 2 | 4 | Serious |
| Wed 27 Sep 1989 | Hertsmere | 1 | 1 | Fatal |
| Sat 7 Oct 1989 | St. Albans | 2 | 1 | Slight |
| Mon 9 Oct 1989 | Dacorum | 5 | 5 | Slight |
| Mon 9 Oct 1989 | St. Albans | 2 | 1 | Slight |
| Sun 29 Oct 1989 | St. Albans | 2 | 2 | Slight |
| Mon 30 Oct 1989 | St. Albans | 2 | 2 | Slight |
| Fri 3 Nov 1989 | Hertsmere | 1 | 1 | Slight |
| Mon 6 Nov 1989 | St. Albans | 2 | 3 | Slight |
| Tue 7 Nov 1989 | St. Albans | 1 | 1 | Slight |
| Tue 7 Nov 1989 | St. Albans | 3 | 1 | Slight |
| Wed 8 Nov 1989 | Hertsmere | 2 | 1 | Slight |
| Thu 9 Nov 1989 | Hertsmere | 2 | 2 | Slight |
| Sat 11 Nov 1989 | St. Albans | 2 | 5 | Slight |
| Sat 18 Nov 1989 | St. Albans | 1 | 1 | Fatal |
| Wed 22 Nov 1989 | St. Albans | 1 | 1 | Serious |
| Wed 29 Nov 1989 | St. Albans | 1 | 1 | Slight |
| Fri 1 Dec 1989 | St. Albans | 1 | 1 | Slight |
| Fri 1 Dec 1989 | St. Albans | 2 | 1 | Slight |
| Mon 4 Dec 1989 | St. Albans | 2 | 1 | Slight |
| Fri 8 Dec 1989 | St. Albans | 2 | 1 | Serious |
| Wed 13 Dec 1989 | St. Albans | 2 | 1 | Slight |
| Thu 14 Dec 1989 | St. Albans | 1 | 1 | Slight |
| Fri 15 Dec 1989 | Hertsmere | 2 | 1 | Serious |
| Wed 27 Dec 1989 | St. Albans | 1 | 1 | Serious |